The metal-ionic liquid interface as characterized by impedance spectroscopy and: In situ scanning tunneling microscopy

T. Pajkossy, Claus Müller, Timo Jacob

Research output: Contribution to journalReview article

4 Citations (Scopus)

Abstract

We summarize our results of electrochemical measurements carried out on inert or close-To-inert metals in ionic liquids, with the aim to explore the metalionic liquid interface structure. To this we used electrochemical methods: cyclic voltammetry, impedance spectroscopy, potential of zero total charge measurements and structure-sensitive techniques, such as in situ scanning tunneling spectroscopy. The studied systems were mostly single crystals of noble metals in imidazolium-based ionic liquids. The two main findings are: (i) in the potential window where no Faradaic reactions occur, the interfacial capacitance exhibits a frequency dependence due to double-layer rearrangement processes and (ii) in certain cases ordered anion and cation structures exist at the interface.

Original languageEnglish
Pages (from-to)21241-21250
Number of pages10
JournalPhysical Chemistry Chemical Physics
Volume20
Issue number33
DOIs
Publication statusPublished - Jan 1 2018

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Ionic Liquids
Scanning tunneling microscopy
scanning tunneling microscopy
Metals
Spectroscopy
impedance
liquids
Precious metals
metals
spectroscopy
Cyclic voltammetry
Anions
Cations
Capacitance
Single crystals
noble metals
Scanning
Liquids
capacitance
anions

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

The metal-ionic liquid interface as characterized by impedance spectroscopy and : In situ scanning tunneling microscopy. / Pajkossy, T.; Müller, Claus; Jacob, Timo.

In: Physical Chemistry Chemical Physics, Vol. 20, No. 33, 01.01.2018, p. 21241-21250.

Research output: Contribution to journalReview article

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